Reinforcing-frame for concrete structures.



G. M. GRAHAM. REINFORUING FRAME FOR CONCRETE STRUCTURES. APPLICATION FILED MAY 6, 1908.

91 0,470. Patented Jan. 19, 1909.

GEGRGEE'E. GRAHAM, OF CHICAGO, ILLINOIS, ASSIGNOR TO G. A,

' CHICAGO, ILLINOIS.

EDWARD KOHLER, OF

asmroscme-rmns FOR concaars srauc'runas, I

No. macro.

Specification of Letters Patent.

Patented Jan. 19,1909.

Original application filed December 10, 1907, Serial No. 405,888. Divided and this application filed'May 6', 1 9 og Serial No. 431,085.

To all whom it may concern:

Be-it known that I, GEORGE M. GRAHAM,.3, citizen of the United States of America, and a residentof Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Reinforc ing-Frames for Concrete Structures, of which the following is a specification.

This invention relates to skeleton reinforcing frames for concrete structures in which the skeleton centers of the frame are formed of series of links of the hoop type arranged in separated relation upon marginal supporting frames. And the present improvement has for its object to provide a simple and convenient arrangement of said series of links, adapted to aid in the easy and economical erection of the skeleton reinforcing frame, all

'as will hereinafter more fully-appear.

In the accompanying drawin s :Figure 1 v is a side elevation a. bundle 0 links of the hoop type. Fig. 2, is a top view of the same. Fig. 3, is an enlarged fragmentary top view" of the same. Fig. 4,'is a plan view illustrating the method of erecting the skeletonv ,filed December 10, 1907, and comprises in part the same construction and arrangement of arts described in such prior application, as ollows:-

l represents aseries'of vertical posts or columns to which aseries of horizontal girders 3 are secured in right angle relation by suitable corner fittin s 2, perferably of the type shown in my September 10, 1907. Four of such girders connected as described constitute the border frame or a single unit of the reinforcing frame for a concrete structure, and additional units will utilize in their formation, agirder of the next adjacent unit or units.

4 is the skeleton web or center for each unit aforesaid, and which consists of a multi plicity of independent wire links, of the hoop type, which encircle the cylindrical border members of a unit in spaced relation and in crossed directions, to provide an open web like centering for the unit, to which the conatent No. 865,489, of

provement consists in forming the aforesaid lmkS of a uniform and counterpartsizeand form, and securing the" same together side by side into a compact bundle by means of twisted tie wires 5 near the respective ends of the bundle, and with the individual links of the bundle in spaced relation to permit of an interleaving of the adjacent ends of two of the bundles together in the erection of the reinforcing structure in manner set forth in detail in my aforesaid application for Letters Patent Serial N 0.405588.

Arranged in the manner above described, the bundle of links constitute a very compact of the structure. is: p

article which can be shipped from the place of manufacture to the place of erection and there applied to the cylindrical frame members in a ready, rapid and economical manher.. In the manufacture of said links an electric weld 6 is preferred for imparting the required endless nature to said llIlkS durin the process of making the same, other usua and suitable iastening lneans may however scope of t resent invention.

The following are the series of steps or operations mooted in the method of erection a ove referred to:- The series of vertical osts 1 are erected, .after which the initial undle 4 of links is slipped upon the initial girder 3' after which saidgirder is raised and con led to itssupporting osts. The second undle 4 of links is t on slipped inside or over'the' initial bundle 4' of links, as found most convenient, and in'jri ht-angle'relatio'n, after which the secon girder 3 is passed throu h one end of the bundle 4" of links and t on coupled in place on and to its supporting posts. At this stage in the erection of a-remforcing structure having two or moreunits in ad acent relation, the bundle 4 of links of the next adjacent unit'will be interleaved with the wire links of the bundle 4 previous to the'next operation, to-wit: The third girder 3" is then slipped into the bundle 4 of links, and the be employed without departing from the fourth girder 3 through the interleaved links of the bundles 4 and 4" after which such girders 3' and 3 are movedto place and coupled to then supporting posts to comcenter thereof arespread apart into the relete the preliminary emotion of the first unit. lhe succeeding unit's'are erected by a re 'e tition of the steps above set forth.

one or more units, the. links comprlsing the quilted spaced relation and the required or predetermined tensioning of the same is effected by imparting in a manual and individual manner, more or less obliqueness to the links in relation to the'marginal frame. 'Having thus fully'described my said invention what I claim asnewand-desire to secure by Letters Patent, is:-' i

1. As an element in reinforcin frames for concrete struotures,,a bundle of of the elongated hoop type and of uniform and 1th 'the completion of the preliminary erection of standard size secured together side by side 4 in spaced relation to permit of an interleaviplgkpf the adjacent ends ef two bundles of 1 together. v

2. As an element in reinforcin frames for concrete structures, a bundle of %inks of the elongated hoop type and of uniform and standard size; and twisted tie wires arranged near the respective ends of the bundle and securing the links together side by side in spaced relation to permit of an interleaving of the adjacent ends of two bundles of links together. Signed at Chicago, Illinois, this 2nd day of May 1908.

' GEORGE M. GRAHAM. Witnesses:

ROBERT BURNS, HENRY Mon. 

